Siemens Acvatix SAX Series User Manual

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Siemens Actuators SAX.., SAY.., SAV.., SAL.. for valves CE1P4040en
Building Technologies Functions and control 2018-12-05
4.1.1 Combination with RVD.. controller for direct domestic
hot water distribution by heat exchanger
The design based slow reaction on control signals of SAX31.., SAX81.., SAV31..
and SAV81.. actuators doesn’t allow the actuator to react on very short control
pulses. Only control pulses with a length greater than 400 ms allow a sufficient
reaction.
Especially the direct domestic hot water control does not allow such long control
pulses. The specific optimized control loops – equipped with an SIGMAGYR RVD..
controller and Acvatix SQS359.05 actuator– work with pulses down to 40 ms.
SAX31.. and SAX81.. are not able to work with these short pulses.
The following table gives alternatives which actuators can be used within these
control loops.
Controller Plant
type
Prefered
actuator
Valve line DN kvs
RVD130
RVD135/109
RVD135/309
RVD140
RVD144/109
RVD145/109
RVD139
4 und 5
SQS35.03
SAS31.03
VVG55.. DN15 ..25 0.25 .. 6.3
SQS359.05
SAT31.008
VVG549.. DN15 ..25 0.25 .. 6.3
SQS359.54
SAT31.51
VVG549.. DN15 ..25 0.25 .. 6.3
SKD32.21
VVG41..
VVF53..
DN15 ..50
0.63 .. 40
0.16 .. 40
SKD32.21E DN15 ..50
0.63 .. 40
0.16 .. 40
RVD230
RVD235/109
RVD250
RVD255/109
RVD240
RVD245/109
RVD260
RVD265/109
x- 4
SQS35.03
SAS31.03
VVG55.. DN15 ..25 0.25 .. 6.3
SQS359.05
SAT31.008
VVG549.. DN15 ..25 0.25 .. 6.3
SQS359.54
SAT31.51
VVG549.. DN15 ..25 0.25 .. 6.3
SKD32.21
VVG41..
VVF53..
DN15 ..50
0.63 .. 40
0.16 .. 40
SKD32.21E
VVG41..
VVF53..
DN15 ..50
0.63 .. 40
0.16 .. 40
.
Notes

Siemens Acvatix SAX Series Specifications

General

Brand	Siemens
Model	Acvatix SAX Series
Category	Controller
Language	English